全文获取类型
收费全文 | 65篇 |
免费 | 0篇 |
国内免费 | 3篇 |
专业分类
安全科学 | 5篇 |
废物处理 | 19篇 |
综合类 | 9篇 |
基础理论 | 13篇 |
污染及防治 | 19篇 |
评价与监测 | 3篇 |
出版年
2023年 | 1篇 |
2022年 | 1篇 |
2019年 | 1篇 |
2017年 | 2篇 |
2016年 | 3篇 |
2015年 | 1篇 |
2014年 | 2篇 |
2013年 | 7篇 |
2012年 | 4篇 |
2011年 | 4篇 |
2010年 | 5篇 |
2009年 | 4篇 |
2008年 | 7篇 |
2007年 | 4篇 |
2006年 | 2篇 |
2005年 | 2篇 |
2004年 | 3篇 |
2003年 | 2篇 |
2001年 | 2篇 |
2000年 | 2篇 |
1996年 | 1篇 |
1994年 | 1篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1977年 | 2篇 |
1956年 | 1篇 |
排序方式: 共有68条查询结果,搜索用时 15 毫秒
61.
Masanao Nagamori Youichi Watanabe Takahito Hase Yasundo Kurata Yusaku Ono Kiyoshi Kawamura 《Journal of Material Cycles and Waste Management》2007,9(1):90-98
To facilitate field surveys for identifying areas of incineration residue-derived soil contamination, a simple and convenient
method with a soil electrical conductivity meter was examined. First, the leaching test specified by Notification No. 13 of
the Ministry of the Environment, 1973, was conducted on 506 samples of 11 types of wastes and compost, and the relationship
between the concentrations of toxic elements [total Hg (T-Hg), Cd, Pb, Cr6+, and As] and values of electrical conductivity (EC) was examined. The results showed that bottom ash and fly ash were wastes
with high EC values and that these wastes indicated higher levels of toxic elements. Second, an estimation method for the
soil EC value of contaminated soil (ECc) was proposed based on the EC values of noncontaminated soil, and its usefulness was
examined. The results of field surveys conducted at sites whose soils were suspected of contamination by dioxins and other
pollutants derived from incineration residues showed that the contaminated spots and areas were identified by using ECc values.
Moreover, comparison of the elemental contents of soils in terms of Cr, Ni, Zn, Na, K, Ca, Fe, Mn, and others, in addition
to the above-mentioned toxic elements (excluding Cr6+), with those of the potential sources of pollution was verified to be effective for identifying the source of soil contamination. 相似文献
62.
Tadayoshi Hitomi Yusaku Iwamoto Asa Miur Koji Hama Kyoji Takaki Eisaku Shiratani 《环境科学学报(英文版)》2010,22(6):885-891
The purpose of this work is to study the effect of a type of water-saving irrigation (WSI) on nutrient runo of paddy field. The
volume of surface drainage was maintained low by WSI. In particular, WSI e ectively reduced surface drainage in rain events. Model
simulation indicated that net runo load of total nitrogen (TN) from the paddy field was increased by WSI. Meanwhile, net runo loads
of total phosphorus (TP) and total organic carbon (TOC) from the paddy field was decreased by WSI. Because ponding waters of the
study fields were enriched with TP and TOC, WSI reduced runo of these nutrients by controlling the volume of surface drainage. WSI
could be considered an e cient method for reducing runo loads and could conserve water quality in an agricultural watershed. 相似文献
63.
Urban household kitchen environment was assessed for safety by determining their levels of indicator bacteria, hygienic habits and risk of cross-contamination. Household kitchens (60) were selected in Warri Town, Nigeria, by the multi-stage sampling technique. Contact surfaces, water and indoor kitchen air were analysed for aerobic plate counts, total and faecal coliforms using Nutrient and McConkey media by swab/rinse method, membrane filtration and sedimentation methods, respectively. Hygienic habits and risk of cross-contamination were assessed with structured questionnaire which included socio-demographic variables. On the basis of median counts, the prevalence of high counts (log cfu/cm2/m3/100 mL) of aerobic plate counts (>3.0), total coliforms (>1.0) and faecal coliforms (>0) on contact surfaces and air was high (58.0–92.0%), but low in water (30.0–40.0%). Pots, plates and cutleries were the contact surfaces with low counts. Prevalence of poor hygienic habits and high risk of cross-contamination was 38.6 and 67.5%, respectively. Education, occupation and kitchen type were associated with cross-contamination risk (P = 0.002–0.022), while only education was associated with hygienic habits (P = 0.03). Cross-contamination risk was related (P = 0.01–0.05) to aerobic plate counts (OR 2.30; CL 1.30–3.17), total coliforms (OR 5.63; CL 2.76–8.25) and faecal coliforms (OR 4.24; CL 2.87–6.24), while hygienic habit was not. It can be concluded that urban household kitchens in the Nigerian setting are vulnerable to pathogens likely to cause food-borne infections. 相似文献
64.
Polyacrylic acid was hydrophobically modified with dodecylamine and used as a coagulant for coprecipitation of hydrophobic organic pollutants from water. The polymer coagulant induced effective aggregation of aluminum hydroxide having hydrophobic regions which are essential for the incorporation of hydrophobic organic pollutants. Recoveries of the organic pollutants increased with increasing the dodecylamine content, which indicated that the dodecylamine moiety played an important role in the formation of hydrophobic area on the precipitate. Different hydrophobic organic pollutants that had hardly been removed by the conventional coprecipitation were successfully collected by the proposed method. 相似文献
65.
Yuji Ijiri Hiromitsu Saegusa Atsushi Sawada Makoto Ono Kunio Watanabe Kenzi Karasaki Christine Doughty Michito Shimo Kenichi Fumimura 《Journal of contaminant hydrology》2009,103(3-4):168-181
Qualitative evaluation of the effects of uncertainties originating from scenario development, modeling approaches, and parameter values is an important subject in the area of safety assessment for high-level nuclear waste disposal sites. In this study, regional-scale groundwater flow analyses for the Tono area, Japan were conducted using three continuous models designed to handle heterogeneous porous media. We evaluated the simulation results to quantitatively analyze uncertainties originating from modeling approaches. We found that porous media heterogeneity is the main factor which causes uncertainties. We also found that uncertainties originating from modeling approaches greatly depend on the types of hydrological structures and heterogeneity of hydraulic conductivity values in the domain assigned by modelers. Uncertainties originating from modeling approaches decrease as the amount of labor and time spent increase, and iterations between investigation and analyses increases. 相似文献
66.
This pilot-scale study evaluated the use of intermediate cover soil barriers for removing heavy metals in leachate generated from test cells for co-disposed fly ash from municipal solid waste incinerators, ash melting plants, and shredder residue. Cover soil barriers were mixtures of Andisol (volcanic ash soil), waste iron powder, (grinder dust waste from iron foundries), and slag fragments. The cover soil barriers were installed in the test cells' bottom layer. Sorption/desorption is an important process in cover soil bottom barrier for removal of heavy metals in landfill leachate. Salt concentrations such as those of Na, K, and Ca in leachate were extremely high (often greater than 30 gL(-1)) because of high salt content in fly ash from ash melting plants. Concentrations of all heavy metals (nickel, manganese, copper, zinc, lead, and cadmium) in test cell leachates with a cover soil barrier were lower than those of the test cell without a cover soil barrier and were mostly below the discharge limit, probably because of dilution caused by the amount of leachate and heavy metal removal by the cover soil barrier. The cover soil barriers' heavy metal removal efficiency was calculated. About 50% of copper, nickel, and manganese were removed. About 20% of the zinc and boron were removed, but lead and cadmium were removed only slightly. Based on results of calculation of the Langelier saturation index and analyses of core samples, the reactivity of the cover soil barrier apparently decreases because of calcium carbonate precipitation on the cover soil barriers' surfaces. 相似文献
67.
Bioremediation of cadmium contaminated soil using symbiosis between leguminous plant and recombinant rhizobia with the MTL4 and the PCS genes 总被引:3,自引:0,他引:3
Cadmium contamination in rice grains is one of the important issues in Asian countries. We have developed a novel bio-remediation system based on the symbiosis between leguminous plant and genetically engineered rhizobia. We designed two types of recombinant rhizobia, carrying two genes, synthetic tetrameric metallothionein (MTL4) and cDNA encoding phytochelatin synthase from Arabidopsis thaliana (AtPCS). The MTL4 and AtPCS genes were transferred to Mesorhizobium huakuii subsp. rengei B3, which can infect and form nodules on Chinese milk vetch, Astragalus sinicus. The two genes were fused to the nolB or nifH promoter, which generated nodule specific expression of these genes in strain B3. The two recombinant strains, B3(pMPnolBMTL4nifHPCS) and B3::nifHMTL4(pMPnifHPCS), showed 25 and 12-fold increase in Cd concentration, in the free-living cells, respectively. When these recombinant strains established the symbiotic relationship with A. sinicus, the symbionts increased Cd accumulation in nodules by two-fold in hydroponic culture. The expression of the both MTL4 and AtPCS genes showed additive effect on cadmium accumulation in nodules. We also applied these recombinant bacteria to rice paddy soil polluted with Cd (1mgkg(-1) dry weight soil). The accumulation of Cd increased not only in nodules but also in the roots of A. sinicus infected by the recombinant rhizobia. The accumulation of Cd in the plant roots infected by B3(pMPnolBMTL4nifHPCS) achieved three-fold than that by the wild-type B3. After two months of cultivation of the symbiont, a maximum of 9% of Cd in paddy soil was removed. Thus, the symbiosis will be useful in phytoremediation for heavy metals. 相似文献
68.
Ono Sayaka Govindarajan Gayathri Visvanathan Chettiyappan 《Journal of Material Cycles and Waste Management》2023,25(5):3033-3047
Journal of Material Cycles and Waste Management - Plastic waste is a growing environmental concern. This study compared plastic waste management between India and Japan using SWOT analysis and a... 相似文献